Perhaps you should try some spelling variations:
"improving revenue performance metrics." » "improving revenue performance measures.", "impacting revenue performance metrics.", "improve revenue performance metrics.", "driving revenue performance metrics."
"improving total performance series." » "improving total performance studies.", "improving total performance size.", "improving tool performance series.", "improving social performance series.", "improving global performance series.", "improving mental performance series.", "improving data performance series."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("improving total performance series.") or ("improving revenue performance metrics."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("improving total performance series.") OR ("improving revenue performance metrics.")).
• Removing quotes may allow a broader search: (( improving total performance series. ) or ( improving revenue performance metrics. )).
• Adding a wildcard symbol may retrieve word variants: (("improving total performance series.") or ("improving revenue performance metrics."))*.